18881687

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 22471680

約数和(自身を除く): 3589993

約数列:

[1, 11, 19, 43, 121, 191, 209, 473, 817, 2101, 2299, 3629, 5203, 8213, 8987, 23111, 39919, 90343, 98857, 156047, 439109, 993773, 1716517, 18881687]

約数ペア:

[(1, 18881687), (11, 1716517), (19, 993773), (43, 439109), (121, 156047), (191, 98857), (209, 90343), (473, 39919), (817, 23111), (2101, 8987), (2299, 8213), (3629, 5203)]